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Cylinder Head Gasket 8-98261313-0 For ISUZU NPR Diesel Engine
The cylinder head gasket carrying OEM numbers 8-98261313-0 and 8982613130 seals the combustion chamber between the cylinder head and engine block on ISUZU NPR series medium‑duty trucks. It is designed for the 4HF1, 4HE1, and 4HG1 engine families — 4.3L and 4.8L inline‑four diesel power units widely used across N‑series chassis including NPR, NKR, NQR, and ELF configurations.
The 4HF1/4HE1/4HG1 engines operate at compression ratios of 18.5:1 to 19.0:1, generating cylinder pressures exceeding 1,600 psi during combustion. This gasket separates the combustion chambers, oil galleries, and coolant passages, preventing the cross‑contamination that leads to blown head gaskets — white exhaust smoke (coolant entering cylinders), bubbling in the radiator (combustion gases pressurising the cooling system), or milky oil (coolant in lubricant).
This gasket utilises multi‑layer steel (MLS) construction — typically three precision‑stamped steel layers with heat‑activated elastomer coating on the outer surfaces. The stainless steel fire rings surrounding each cylinder bore resist thermal deformation and maintain sealing force through the engine's service life. Unlike composition gaskets that require re‑torquing after break‑in, MLS design delivers consistent clamping force without additional maintenance.
For workshop owners, fleet maintenance managers, and parts distributors, this direct‑fit replacement restores factory compression and eliminates the risk of repeating head gasket failures common on high‑mileage 4H‑series engines exceeding 300,000 km.
Part Number:
8-98261313-0 8982613130
Product Name:
Cylinder Head Gasket
Car Model:
ISUZU NPR
Engine Model:
ISUZU 4HF1 4HE1 4HG1
Condition:
100% Brand New
Size:
Standard
Weight:
Standard
Origin:
China Mainland
Main Market:
Middle East, Asia, Africa, South America, North America & Europe
Package:
Neutral Packing Or Make It As Requested
Material:
High-strength aluminum alloy & precision bearings
Cooling Type:
Engine coolant circulation
Installation:
Direct OEM replacement
Quality Standard:
OEM equivalent / ISO quality control
Applications
This ISUZU cylinder head gasket 8-98261313-0 directly replaces the factory gasket in the following configurations:
Chassis / Model
Engine
Years
Notes
ISUZU NPR66
4HF1 (4.3L)
1987-1994
Primary application — 4‑cylinder, 4,334 cc
ISUZU NPR70 / NPR71
4HE1‑T (4.8L turbo)
1994-2000
Turbocharged variant, 4.8L
ISUZU NKR66 / NKR58
4HG1 (4.3L)
1987-1994
Light cab‑over chassis
ISUZU NQR71
4HG1 (4.3L)
1994-2002
Medium chassis, higher GVWR
ISUZU ELF (Japanese domestic)
4HE1 / 4HG1
1987-2000
All N‑series ELF variants
ISUZU NPR59
4BD1‑T (3.9L)
--
Verify — cross‑check original gasket
ISUZU NPS71
4HE1‑T
1994-2000
4x4 chassis variant
Chevrolet / GMC W‑series
4HE1‑T / 4HG1
1990-2000
Rebadged ISUZU (North America)
The 4HE1‑T engine (4.8L turbo, intercooled) produces up to 167 hp at 2,300 rpm and 427 lb‑ft of torque at 1,500 rpm with a Garrett TB28 turbocharger. The 4HF1 (4.3L) produces 88-96 kW (120-130 PS). This gasket is compatible with naturally aspirated, turbocharged, and intercooled variants across the 4H engine family, provided the cylinder head and block interface matches the original. For parts distributors and repair shops, this single SKU covers multiple engine displacements and chassis configurations.
Features & Benefits
Multi‑Layer Steel (MLS) Construction for Diesel Reliability — The gasket uses three precision‑stamped steel layers—two outer layers with embossed sealing beads and a middle spacer layer. MLS gaskets maintain consistent clamping force through thousands of thermal cycles, unlike composition gaskets that take a permanent set and lose sealing pressure over time.
Stainless Steel Fire Rings — Pre‑Compressed for Gas‑Tight Sealing — Each cylinder opening is surrounded by a stainless steel fire ring, pre‑compressed during manufacturing. When the cylinder head is torqued to factory specification, the fire ring compresses further, creating a gas‑tight seal around the combustion chamber.
Heat‑Activated Elastomer Coating — No Additional Sealant — The outer steel layers carry a heat‑activated elastomer coating. When the engine reaches operating temperature, the coating softens and flows into microscopic surface imperfections on the cylinder head and block, sealing oil and coolant passages.
Direct Replacement for 4HF1, 4HE1, 4HG1 Engines — The gasket is cut to the exact dimensions of the 4H‑series engine family—the same 112 mm bore shared across 4HF1, 4HE1, and 4HG1 variants.
Proven on High‑Compression Diesel Cycles — The 4HE1‑T engine's 18.9:1 compression ratio generates sustained cylinder pressures exceeding 1,600 psi under full turbo boost. An MLS gasket is the only design that reliably seals these pressures for the full service life.
IATF 16949 Certified Manufacturing — Each batch is produced in an IATF 16949 certified facility—the automotive industry's highest quality management standard for component production.
Quality Control & Verification
Each batch of the ISUZU cylinder head gasket 8-98261313-0 undergoes the following verification:
QC Item
Verification Method
Fire ring bore alignment
Laser measurement — 112 mm ±0.03 mm tolerance
Gasket thickness
Digital micrometer at 6 points — 1.15-1.25 mm
Layer registration
Optical inspection — all three layers align within 0.2 mm
Fire ring material
Spectrographic analysis per batch — stainless steel grade confirmed
Elastomer coating integrity
Visual and adhesion test — no voids, cracks, or missing coating on sealing beads
Elastomer curing
Surface hardness and solvent rub test — proper cross‑linking confirmed
Fire ring compression test
Hydraulic press — sample compressed to 150 bar; fire ring height measured within spec
Thermal cycle test
Sample cycled -20°C to 150°C, 100 cycles; torque retention verified
Full dimensional inspection
CMM measurement against ISUZU engineering drawings — 100% critical dimensions
A certificate of conformance (COC) with batch material analysis is available for wholesale orders. For first‑time buyers, a pre‑shipment inspection report covering fire ring alignment and thickness measurements can be provided for a sample order.
Packaging & Supply
Individual packaging: Sealed in anti‑rust VCI paper, foam‑lined neutral carton
Carton dimensions: 58 × 32 × 3 cm per unit
Net weight: 0.85 kg; gross weight (with packaging): 1.2 kg
Master carton: 50 units per export carton
Lead time: 3-7 working days for stock orders; 15-20 days for production orders above 500 pieces
Minimum order quantity: 1 piece (sample order available)
Shipping: FedEx, UPS, DHL for samples; sea freight (LCL/FCL) from Shanghai, Ningbo, Guangzhou ports
H/S Code: 84841000
For workshops planning a full top‑end overhaul, the supplier also stocks 4H‑series head bolts, valve stem seals, intake/exhaust manifold gaskets, and full overhaul gasket sets for the 4HF1, 4HE1, and 4HG1 engines. Contact the sales team with your forecasted monthly volume and destination port for a tiered price list.
Quick Summary
The ISUZU NPR cylinder head gasket 8-98261313-0 is an OEM‑specification MLS replacement for 4HF1 (4.3L), 4HE1/4HE1‑T (4.8L), and 4HG1 (4.3L) diesel engines. Stainless steel fire rings and heat‑activated elastomer coating deliver gas‑tight sealing under 1,600 psi cylinder pressures. One part number covers NPR66, NKR66, NQR71, and ELF chassis across the entire 4H‑series family. IATF 16949 certified with batch traceability.
Order a sample unit today to verify fitment on your 4H‑series engine—the same gasket fits naturally aspirated, turbocharged, and intercooled variants.
Yimi(Guangzhou) Automotive Parts Co,Ltd
located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv... Yimi(Guangzhou) Automotive Parts Co,Ltd
located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv...
